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{2-Hydr-oxy-6-[(2-oxidophen-yl)imino-methyl-?N,O]phenolato-?O}phenyl-boron.

ABSTRACT: The [4.3.0]heterobicyclic title structure, C(19)H(14)BNO(3), is composed of a five-membered OBNC(2) ring and a six-membered OBNC(3) ring, each of which has an approximate envelope conformation. The coordination geometry of the B atom is distorted tetra-hedral. In the crystal structure, centrosymmetrically related mol-ecules are associated through pairs of O-H?O hydrogen bonds.

SUBMITTER: Vega A

PROVIDER: S-EPMC2983817 | biostudies-other | 2010

REPOSITORIES: biostudies-other

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{2-Hydr-oxy-6-[(2-oxidophen-yl)imino-methyl-κN,O]phenolato-κO}phenyl-boron.

Vega Araceli A Tlahuext Hugo H Höpfl Herbert H

Acta crystallographica. Section E, Structure reports online 20100306 Pt 4

The [4.3.0]heterobicyclic title structure, C(19)H(14)BNO(3), is composed of a five-membered OBNC(2) ring and a six-membered OBNC(3) ring, each of which has an approximate envelope conformation. The coordination geometry of the B atom is distorted tetra-hedral. In the crystal structure, centrosymmetrically related mol-ecules are associated through pairs of O-H⋯O hydrogen bonds. ...[more]

PMID: 21580603

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Crystal structure of bis-{?-2-meth-oxy-6-[(methyl-imino)-meth-yl]phenolato}bis-({2-meth-oxy-6-[(methyl-imino)-meth-yl]phenolato}nickel(II)) involving different coordination modes of the same Schiff base ligand.

Project description:The structure of the title compound, [Ni2(C9H10NO2)4], is built up by discrete centrosymmetric dimers. Two nitro-gen and three oxygen atoms of two Schiff base ligands singly deprotonated at the phenolate site form a square-pyramidal environment for each metal atom. The ligands are bonded differently to the metal centre: one of the phenolic O atoms is bound to one nickel atom, whereas another bridges the two metal atoms to form the dimer. The Ni-N/O distances fall in the range 1.8965?(13)-1.9926?(15)?Å, with the Ni-N bonds being slightly longer; the fifth contact of the metal to the bridging phenolate oxygen atom is substanti-ally elongated [2.533?(1)?Å]. A similar coordination geometry was observed in the isomorphous Cu analogue previously reported by us [Sydoruk et al. (2013 ?). Acta Cryst. E69, m551-m552]. In the crystal, the [Ni2 L 4] mol-ecules form sheets parallel to the ab plane with the polar meth-oxy groups protruding into the inter-sheet space and keeping the sheets apart. Within a sheet, the mol-ecules are stacked relative to each other in such a way that the Ni2O2 planes of neighbouring mol-ecules are orthogonal.

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Project description:In the title compound, [Sn(C(20)H(19)N(2)O(3))Cl(3)], the Sn(IV) ion is surrounded by a tridentate monoanionic Schiff base and by three meridional chloride ions in a six-coordinated distorted octa-hedral geometry. The Sn-Cl bond [2.366 (2) Å] trans to nitro-gen is shorter than the others [2.438 (2) and 2.414 (2) Å]. The N-Sn-N angle [76.19 (11)°] is smaller than the O-Sn-N angle [87.89 (10)°] in the Schiff base ligand. No classical inter-molecular hydrogen-bonding inter-actions are observed. The crystal packing exhibits π-π stacking inter-actions, with a distance of 3.595 (2) Å between the centroids of the phenolate ring and the benzene ring of the quinoline group of inversion-related mol-ecules.

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Project description:The title Schiff base complex, [V(C(13)H(7)BrClNO(2))(CH(3)O)O(CH(3)OH)], features a vanadyl group, a tridentate Schiff base ligand, and coordinated methanol and methano-late ligands. The NO(5) donor set is based on a distorted octa-hedron. Helical supra-molecular chains along [010] are found in the crystal structure mediated by O-H⋯O hydrogen bonds formed between the coordinating methanol mol-ecule and the phenolate O atom of the chloro-benzene residue.

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